Prebid.js is the open source framework that allows sites (also known as "publishers") to connect external advertiser demand to their ad inventory.
The sincera engine crawls of the top websites, with 77,715 indicating they are running prebid. 38,313 are running the latest major version of Prebid, indicating that 49.3% of sites are on version 5 or greater.
Note that there are many forks of Prebid that restrict some form of functionality (Prebid API access) so this should be considered a conservative number.
This chart provides a view into the total number of publishers on each minor version of Prebid.
As Open Source software, Prebid plays a vital royal in the digital advertising ecosystem, as standardizes and maintains a path to advertiser demand for sites outside of the closed platforms (also known as "walled gardens") of Google, Facebook and Amazon.
div_id: banner-div-a size: 300x250 site_id: 335943
div_id: banner-div-b size: 300x250 site_id: 487806